One hundred points, five bands, no vanity metric.
A fixed, published scale for what "search visibility" means, so a reading means the same thing between engagements and does not move because someone changed the definition.
The index
Eight weighted categories · 100 pointsThe weights are fixed and published so a score means the same thing between engagements. Technical foundation carries the largest single weight because it is the only layer whose failure is total — every other category is worth nothing to a system that cannot read the site at all.
The four bands
What a number meansA band is a statement about risk, not a grade. A site below 60 is not "failing" — it is exposed on categories worth more than 40 of the 100 points, and the index says which ones before a single hour of work is scoped.
What the index is not
Stated directlyBuild visibility
Seven questionsScore your own site against the index in a few minutes, or start a full diagnostic.